97742931 has 32 divisors (see below), whose sum is σ = 155312640. Its totient is φ = 53894400.

The previous prime is 97742927. The next prime is 97742951. The reversal of 97742931 is 13924779.

It is not a de Polignac number, because 97742931 - 2² = 97742927 is a prime.

It is a super-2 number, since 2×97742931² = 19107361120941522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97742921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28855 + ... + 32063.

It is an arithmetic number, because the mean of its divisors is an integer number (4853520).

Almost surely, 2^97742931 is an apocalyptic number.

97742931 is a deficient number, since it is larger than the sum of its proper divisors (57569709).

97742931 is a wasteful number, since it uses less digits than its factorization.

97742931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3307.

The product of its digits is 95256, while the sum is 42.

The square root of 97742931 is about 9886.5024654829. The cubic root of 97742931 is about 460.6401468655.

The spelling of 97742931 in words is "ninety-seven million, seven hundred forty-two thousand, nine hundred thirty-one".